Parental Mental Health and Child Maltreatment in the COVID-19 Pandemic: Importance of Sampling in a Quantitative Statistical Study.

Background: Results on parental burden during the COVID-19 pandemic are predominantly available from nonrepresentative samples. Although sample selection can significantly influence results, the effects of sampling strategies have been largely underexplored.

Objective: This study aimed to investigate how sampling strategy may impact study results.

Gas-Phase Fragmentation of Coenzyme Q Radical Anion Generated by APCI: A Study by High/Low-Resolution Tandem/Sequential Mass Spectrometry.

Coenzyme Q (CoQ) and closely related compounds with varying isoprenoid tail lengths (CoQ, = 6-9) are biochemical cofactors involved in many physiological processes, playing important roles in cellular respiration and energy production. Liquid chromatography (LC) coupled with single or tandem mass spectrometry (MS) using electrospray (ESI) or atmospheric pressure chemical ionization (APCI) is considered the gold standard for the identification and quantification of CoQ in food and biological samples. However, the characteristic fragmentation exhibited by the CoQ radical anion ([M], / 862.

Leuconostoc mesenteroides strain MS4-derived bacteriocins: A potent antimicrobial arsenal for controlling Xylella fastidiosa infection.

Xylella fastidiosa subsp. pauca (Xfp) currently presents a serious threat to agriculture in Europe and in the Mediterranean, following its discovery in several countries. Addressing this bacterial plant disease with traditional agricultural practices and management strategies has proven inadequate, highlighting the urgent need for effective and environmentally safe antibacterial solutions.

Confirmation of the unexpected occurrence of bitterness-inducing cucurbitacins in edible unripe melons by a two-step workflow based on liquid chromatography with combined UV and high-resolution MS detection.

Plant metabolites known as cucurbitacins are known to impart an unpleasant bitter taste to edible fruits and even lead to severe health complications after the ingestion of relatively high amounts. In this study, an analytical method based on reversed phase liquid chromatography with combined detection by UV spectroscopy and atmospheric pressure chemical ionization high-resolution single/tandem mass spectrometry was applied to confirm the occurrence of four cucurbitacins (B, D, and R, and 23,24-dihydro cucurbitacin B) previously inferred in unexpectedly bitter-tasting fruits of an Italian variety (Scopatizzo) of unripe melon (Cucumis melo L.), known for the sweetness of its fruits.

Look but don't touch: Non-invasive chemical analysis of organic paint binders - A review.

Diagnostics on historical art samples are decisive for assessing degradation and understanding the chemical composition of supports and polychromies. These investigations help us in uncovering the artist's style and techniques and provide invaluable information for restoration, preservation and conservation. In paint formulation, the binder, also known as medium, disperses insoluble pigments and creates a homogeneous, adhesive mixture.